1.   Much of the functionality of cellular systems lies in the microprocessors that operate both the subscriber units and the infrastructure.

2.   The company also is developing equipment that will allow computer data to be transmitted over cellular systems.

3.   A major step forward, he said, was the introduction of cellular working systems which involves groups of five people taking responsibility for two production lines.

4.   Also, as existing analog cellular systems in the U.S. are converted to digital, an established CDMA standard would create an enormous future demand for the technology.

5.   Also, as the existing analog cellular systems around the country are converted to digital, an established CDMA standard would create an enormous future demand for the technology.

6.   A decade ago, these companies believed they could overcome the shortcomings of earthbound cellular systems and give mobile phone users better global coverage by bouncing signals off satellites.

7.   But they converted most of those customers from their analog cellular system.

8.   Cellular systems also are expected to be reliable, and subscribers to Iridium no doubt will expect the same performance.

9.   Cut the phone lines, and the cellular system kicks in to make the call to the alarm monitoring service.

10.   Different cellular systems operate over a wide range of frequencies.